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You perform a double-slit experiment in order to measure the wavelength of the new laser that you received for your birthday. You set your slit spacing at 1.17 mm and place your screen 9.01 m from the slits. Then you illuminate the slits with your new toy and find on the screen that the tenth bright fringe is 4.91 cm away from the central bright fringe (counted as the zeroth bright fringe). What is your laser\'s wavelength expressed in nanometers?
When a 42.0-V emf device is placed across two resistors in series, a current of 12.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 62.0 A. Wh..
A physicist trying to demonstrate destructive interference stands 2.7m directly in front of a speaker. A second speaker produces identical (coherent) 600Hz tones.
Students in a fraternity house want to be able to spray water 25 m across their neighbor's yard onto a patio. What size nozzle do they need
Find out the magnitude of the vertical component of the velocity
You are designing a delivery ramp for crates containing exercise equipment. The crates of weight 1470N will move with speed 2.2m/s at the top of a ramp that slopes downward at an angle 25.0degrees. The ramp will exert a 621N force of kinetic friction..
we can assume that the arm moves with constant speed during each swing. Illustrate what is the acceleration of a 1.3g drop of blood in the fingertips at the bottom of the swing?
An asteroid is headed towards a starbase. To try and avoid a collision, an explosive device is planted on the asteroid, Does the other piece of the asteroid hit the starbase
Consider the circuit made of a R = 100 resistor, voltage source V , and fuse F. The fuse breaks if the instantaneous current in the circuit reaches 1 A. Which of the following voltage sources can be used in the circuit without breaking the fuse?
Two tiny spheres have the same mass and carry charges of the same magnitude. Determine the charge magnitude
The speed of a 1kg object is 2.0m/s (+/-) .05m/s, meaning its absolute uncertainty is .5m/s, calculate the absolute uncertainty in the kinetic energy
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
A 0.954-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. What is the average current supplied to the car\'s motor
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